[Low-Tech] [High-Tech] Portable cooling: higher-TL replacement of water jugs?

[Anthony]

Originally Posted by vicky_molokh

The point seems to be that it's cooling cumulative with sweat-cooling, available as long as you can afford a +5% increase in water expenditure per day.

That 2% increase is not worth a +1. I think it's for heat stroke. It might also have something to do with psychological factors for thirst, in that you're more likely to drink more water when the water is cool.